docs: def _make_unique_title(self, title):
          """Make the title unique.
  
          Adds a counter to the title to prevent duplicates.
  
          Prior to IDA 6.8, two graphs with the same title could crash IDA.
          This has been fixed (https://www.hex-rays.com/products/ida/6.8/index.shtml).
          The code will not change for support of older versions and as it is
          more usable this way.
          """
          unique_title = title
  
          for counter in itertools.count():
              unique_title = "{}-{}".format(title, counter)
              if not idaapi.find_tform(unique_title):
                  break
  
          return unique_title